Tracheostomy air filtration device



FIG. 1 is a back view of the invention.

FIG. 2 is a front view of the invention.

FIG. 3 is the top view of the invention.

FIG. 4 is bottom view of the invention.

FIG. 5 is the right side view of the invention; and,

FIG. 6 is the left side view of the invention.

The ornamental design for a tracheostomy air filtration device, asshown.